diff --git a/g/database/gkafka/gkafka.go b/g/database/gkafka/gkafka.go
index b92b5baf3..4b18b49e5 100644
--- a/g/database/gkafka/gkafka.go
+++ b/g/database/gkafka/gkafka.go
@@ -42,28 +42,28 @@ type Message struct {
 
 
 // New a kafka client.
-func New(config Config) *Client {
+func New(config *Config) *Client {
+    return &Client {
+        Config : config,
+    }
+}
+
+// New a default configuration object.
+func NewConfig() *Config {
+    config       := &Config{}
+    config.Config = *sarama.NewConfig()
     config.Config = *sarama.NewConfig()
 
     // default config for consumer
-    config.Consumer.Return.Errors = true
-    if config.Consumer.Offsets.Initial == 0 {
-        config.Consumer.Offsets.Initial = sarama.OffsetOldest
-    }
-    if config.Consumer.Offsets.CommitInterval == 0 {
-        config.Consumer.Offsets.CommitInterval = 1 * time.Second
-    }
+    config.Consumer.Return.Errors          = true
+    config.Consumer.Offsets.Initial        = sarama.OffsetOldest
+    config.Consumer.Offsets.CommitInterval = 1 * time.Second
 
     // default config for producer
-    config.Producer.Return.Errors    = true
-    config.Producer.Return.Successes = true
-    if config.Producer.Timeout == 0 {
-        config.Producer.Timeout = 5 * time.Second
-    }
-
-    return &Client {
-        Config : &config,
-    }
+    config.Producer.Return.Errors          = true
+    config.Producer.Return.Successes       = true
+    config.Producer.Timeout                = 5 * time.Second
+    return config
 }
 
 // Close client.
@@ -96,7 +96,10 @@ func (client *Client) Receive() (*Message, error) {
                 for {
                     select {
                         case err := <-errors:
-                            glog.Error(err)
+                            if err != nil {
+                                glog.Error(err)
+                            }
+
                         case <-notify:
                     }
                 }
@@ -147,7 +150,9 @@ func (client *Client) AsyncSend(message *Message) error {
                 for {
                     select {
                         case err := <-errors:
-                            glog.Error(err)
+                            if err != nil {
+                                glog.Error(err)
+                            }
                         case <-success:
                     }
                 }
diff --git a/geg/database/kafka/gkafka_consumer.go b/geg/database/kafka/gkafka_consumer.go
index 84e257639..82688977b 100644
--- a/geg/database/kafka/gkafka_consumer.go
+++ b/geg/database/kafka/gkafka_consumer.go
@@ -6,15 +6,16 @@ import (
 )
 
 func main () {
-    client := gkafka.New(gkafka.Config{
-        GroupId : "group_1",
-        Servers : "localhost:9092",
-        Topics  : "abc",
-    })
+    config        := gkafka.NewConfig()
+    config.GroupId = "group_2"
+    config.Servers = "localhost:9092"
+    config.Topics  = "abc"
+
+    client := gkafka.New(config)
     defer client.Close()
+
     for {
        msg, err := client.Receive()
-       fmt.Println(err)
-       fmt.Println(string(msg.Value))
+       fmt.Printf("value: %s, err: %v", string(msg.Value), err)
     }
 }
diff --git a/geg/database/kafka/gkafka_producer.go b/geg/database/kafka/gkafka_producer.go
index fa5912ca9..a25d66e0a 100644
--- a/geg/database/kafka/gkafka_producer.go
+++ b/geg/database/kafka/gkafka_producer.go
@@ -6,10 +6,11 @@ import (
 )
 
 func main () {
-    client := gkafka.New(gkafka.Config{
-        Servers : "localhost:9092",
-        Topics  : "abc",
-    })
+    config        := gkafka.NewConfig()
+    config.Servers = "localhost:9092"
+    config.Topics  = "abc"
+
+    client := gkafka.New(config)
     defer client.Close()
     err := client.SyncSend(&gkafka.Message{Value: []byte("111")})
     fmt.Println(err)